ISDN - Integrated Services Digital NetworkSending digital images over normal telephone wiresBetter qualityHigh Speedshort delaysTypical ISDN speeds range from 64 Kbps to 128 Kbps. B-ISDN - Broadband ISDNis similar in function to ISDN but it transfers data over fiber optic telephone lines Internet over Satelliteallows a user to access the Internet via a satellite that orbits the earth. A satellite isplaced at a static point above the earths surface, in a fixed position. It is slightlyslower than high-speed terrestrial connections over fiber optic cables. TypicalInternet over satellite connection speeds (standard IP services) average around 492up to 512 Kbps.6
7security • Defined by theprivate networkTCP/IP• Shared IP• Basic communicationlanguage or protocol• IP move packet of datafrom node to node.• TCP verify the correctdelivery of dataPTP • Dedicated connectionVPNInternet
8 extends a private network across theInternet (public network)Enable host computer to send and receivedata (images) across shared or public networks as ifthey were an integral part of the privatenetwork with all the functionality, security and management policies of theprivate network. establish a virtual point-to-pointconnection through the use of dedicatedconnections It is technically a wide area network (WAN)link between two sites. the extended network resources areaccessed in the same way as resourcesavailable from the private network
9InternetVPNATM high-speed networking standarddesigned to support datacommunications. ATM is normally utilized byInternet service providers on theirprivate long-distance networks. ATM switches establish dedicatedpoint-to point connectionsbetweenendpoints and data (images)flows directly from source todestination. ATM utilizes fixed-sized cells. The decoder (codec) that does thisneeds an evenly spaced (in time)stream of data items. maximum speed of 10 Gbit/s.
Technology for secure the network quality. QOS is the ability to guarantee a certain level ofperformance. QOS guarantees are important if the network capacityis insufficient, for real-time telesurgery, since theseoften require fixed bit rate and are delay sensitive. During the session it may monitor the achieved levelof performance, for example the data rate and delay,and dynamically control scheduling priorities in thenetwork nodes.10
A remote surgery experiment between Japan-Korea using the minimally invasive surgicalsystem .pdf Telesurgery: Advances and Trends by David Holt,B.Sc (OT7), Ali Zaidi*, B.Sc (OT7), Joy Abramson, B.Sc(OT8),Ron Somogyi, M.Sc (OT8) Telementoring and Telesurgery in Urology.pdf byBen Challacombe and Prokar Dasgupta Quality of service - Wikipedia, the free encyclopedia